Gearing.



J. J. BOWES, JR.

GEARING.

APPLIOATION FILED FEB.15,1908.

Patented Nov. 24, 1908.

2x3 l 11 cases Lli JOHN .T. BOWES, JR., OF PENSACOLA, FLORl DA.

GE ARING.

Specification of Lettels Patent.

Patented Nov. 24, 1908.

Application filed February 15, 1908. Serial No. 416,101.

T all whom it may concern:

Be it known that I, JOHN J. Bowns, J12, a citizen of the United States,residing at Pensacola, in the county of Escanibia and State of Florida,have invented new and useful Improvements in Gearing, of which thefollowing is a specification.

This invention relates to gearing for mechanical movements, the objectof the invention being to provide a power transmission device in whichthe power of one shaft is transmitted to another shaft exactly at rightangles thereto without the aid of the usual bevel gearing.

The main object of the present invention is to provide in connectionwith a suitable gear case, intermeshing worm gears mounted therein sothat dirt, dust and other foreign matter is effectively excludedtherefrom and means for adjusting the gears relatively to each otherfrom the outside of the gear case and without opening up the gear case,whereby said gears are maintained in proper working mesh with each otherand wear may be taken up.

lVith the above and other objects in view, the nature of which will morefully appear as the description proceeds, the invention consists in thenovel construction, combination and arrangement of parts as herein fullydescribed, illustrated and claimed.

In the accompanying drawings z-Figure 1 is a broken side elevation ofthe gearing of this invention. Fig. 2 is a diametrical section throughthe same.

Referring to the drawings, 1 designates a worm wheel provided withperipheral worm teeth 2 while 3 designates a worm mounted fast on adriving shaft 1 which extends at right angles to the shaft 5 of the wormwheel 1 said wheel being also fast on said shaft.

In carrying out the present invention, I provide a two-part or sectionalgear case embodying the oppositely arranged similar sections 6 and 7,each circular in form, the two sections having an overlapping rabbetedengagement along their peripheries as shown 1 at 8 whereby all dirt,dust or foreign matter is effectually excluded. The sections are furtherprovided with attaching and supporting feet or flanges 9 adapted to besecured to a floor or other support, while the two parts or sections ofthe casing are socured firmly together by fasteners 10 in the form ofbolts, rivets or the like.

l l l l The opposite ends of the worm o are pro vided with annular ballraces in which are mounted series of inlet friction balls 11 which alsorun in annular grooves in the upper portion of the gear case, the saidballs constituting end thrust bearings for the worm, being interposedbetween the opposite ends of the worm and the adjacent walls of thegear, both as clearly shown in Fig. 1.

The shaft 5 of the worm wheel 1 is ournaled in eccentric bushings 12mounted in. the opposite gear case sections as shown in Fig. 2, thesaid. sections being enlarged or provided with laterally projecting hubs13 in which the said bushings 12 are mounted. The bearing openings insaid bushings are eccentric relatively to the outer surfaces of thebushings so that by turning the bushings 12 within the sections of thegear case, the worm wheel 1 is moved toward or away from the worm 3 inorder to obtain the proper mesh for operative engagement between saidparts. In order to turn the bushings 12, they may be provided withspanner sockets 1 1 adapting them to be turned by means of a suitablespanner, and after the desired adjustment is effected, the bushings 12may be held by one or more set screws 15. Under the preferred embodimentof the invention, the bushings 12 are provided at their outer ends withcircumferential flanges 16 in which the spanner sockets 1 1 are formed,said flanges lying in close proximity to or against the opposite outeredges of the hub extensions 13 of the gear case.

17 designates a coupling by means of which the shaft 4 of the worm maybe connected to an extension shaft 18.

From the foregoing description, it will be seen that the worm wheel 1may be adjusted toward and away from the worm 3 from the exterior of thegear case and without opening up the gear case, the interior of whichmay thus be kept perfectly free from dust, dirt and any other foreignmatter.

Having thus described the invention, what is claimed as new, is:-

1. Gearing of the class described embodying a worm, a worm shaft, a wormwheel, a worm wheel shaft, and a sectional gear case inclosing the saidworm and worm wheel and having bearings for the shafts thereof, adjustable eccentric bushings mounted in the gear case and. having the wormwheel shaft journaled therein and means worm wheel shaft, a sectionalgear case intfor fastening said eccentric bushings.

2. Gearing of the class described comprising a worm, a worm shaft, aworm wheel, a worm wheel shaft, a sectional gear case the sections ofWhich have a rabbeted engagement at their meeting edges, eccentricbushings mounted in the gear case and having the worm wheel shaftjournaled therein, said bushings haying flanges thereon provided withspanner sockets whereby said bushings are adapted to be turned to movethe worm wheel toward and away from the worm and means for fasteningsaid bushings.

3. Gearing of the class described comprising a worm, a worm shaft, aworm wheel, a

closing the worm and worm wheel and providing bearings forsaid shaftsmeans for adjusting the worm wheel toward and away from the worm, andend thrust ball bearings for the worm consisting of circular series ofanti-friction balls mounted in ball races formed in the opposite ends ofthe Worm and the opposing walls of the gear case substantially asdescribed.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN J. BOXVES, JR. lVitnesses XV. E. VVILSON, IRVING J KING.

